Dirk , je bent erg in de buurt, maar hmmm... nee, heb ff gekeken wat TERCOM en DSMAC is, alhoewel nu ik de tekst nog eens lees, is het eigenlijk ook van toepassing op jouw antwoord.
Dus ja, het is juist.:???:
Ik doelde eigenlijk op IRS/INS/AHARS. Alhoewel de input van de systemen verschillend is, is de output hetzelfde. TERCOM vergelijkt en past aan dmv hoogtemeter en beelden , IRS/INS meet de acceleraties en vergelijkt dit waar het toestel eigenlijk moet zijn.
Tekst die ik vond over TERCOM:
<table class="MainContentCarcass" id="MainContentCarcass" cellpadding="0" cellspacing="0"><tbody><tr></tr><tr> <td style="max-width: 820px;"> TERCOM is an automated
navigation system used primarily by an
unmanned aerial vehicle such as a long-range cruise missile. The system uses a predefined
contour map of the flight path which acts as a comparison master image. The missile is equipped with a sophisticated radar
altimeter which constantly reads the terrain it is crossing and compares the readings to the master image. When deviations are detected, the missile's guidance system makes the necessary corrections to its flight path. This makes extremely accurate navigation and collision avoidance possible, thereby allowing the missile to fly closer to the ground and avoiding detection by radar.
Terrain contour mapping, or TERCOM as it is more commonly referred to, is one of the most accurate and reliable referential navigation systems for long-range,
unmanned aerial vehicles such as cruise missiles. In the initial stages of long-range missile development, several methods of navigation were used such as the graphic comparison systems in early intercontinental ballistic missiles (ICBMs). These systems employed surveillance photographs as a master while an onboard camera took a series of photographs en route as comparison material. The master and en route photos were scanned by a
computer for high contrast similarities, and the missile navigated according to the results. This process was extremely slow and laborious and resulted in a navigation validation process based on very few reference points.
</td></tr></tbody></table>
En tekst over IRS:
An
inertial navigation system (INS) is a
navigation aid that uses a
computer, motion sensors (
accelerometers) and rotation sensors (
gyroscopes) to continuously calculate via
dead reckoning the position, orientation, and
velocity (direction and speed of movement) of a moving object without the need for external references. It is used on vehicles such as
ships,
aircraft,
submarines,
guided missiles, and
spacecraft. Other terms used to refer to inertial navigation systems or closely related devices include
inertial guidance system,
inertial reference platform,
inertial instrument, and many other variations.
Dirk , het is aan jou.
Cor
...
Nog steeds geen echt meetinstrument, maar ach.....